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October Weather in Saint Johns, United States

Last updated: June 24, 2025

In October, the average temperature in Saint Johns, United States is a pleasant 12°C (53°F). However, don’t be surprised if the mercury dips as low as -4°C (25°F) or climbs to a warm 30°C (86°F). Expect 116 mm (4.6 in) of precipitation spread over 14 days, contributing to a notable average humidity of 84%. Prepare for a mix of weather that’s both refreshing and variable!

October Temperature in Saint Johns

In October in Saint Johns, the average temperature is 12°C (53°F). The maximum can reach 30°C (86°F), while the minimum can drop as low as -4°C (25°F). Be prepared for a wide range of temperatures when traveling to Saint Johns this October.

October Weather in Saint Johns: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Saint Johns, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Johns, October typically has an average temperature of 12°C (53°F), with highs reaching up to 30°C (86°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec252736465970757265533832
Data source: Temperature data for Saint Johns generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Saint Johns

In Saint Johns in October, the total precipitation amount is 116 mm (4.6 in) spread over a duration of 14 days.

October Precipitation Trends in Saint Johns

The chart displays monthly precipitation patterns in Saint Johns, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Saint Johns, October typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec6366638812111768681011166360
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Saint Johns

In Saint Johns in October, humidity is 84%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that clings to your skin, making travel a bit uncomfortable as you navigate through the heavy, moist air.

October Average Humidity in Saint Johns

This chart illustrates the average monthly humidity levels in Saint Johns, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Saint Johns is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Saint Johns

In Saint Johns in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Saint Johns.

Maximum UV Index Levels in Saint Johns for October

The chart shows the monthly maximum UV Index (UVI) for Saint Johns in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Saint Johns typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Saint Johns October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in Saint Johns Compares to Other Months

Weather in Saint Johns varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Saint Johns, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Saint Johns, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)63 mm (2.5 inches)88%low
February Weather-3°C (27°F)66 mm (2.6 inches)87%moderate
March Weather2°C (36°F)63 mm (2.5 inches)85%moderate
April Weather8°C (47°F)88 mm (3.5 inches)86%very high
May Weather15°C (60°F)121 mm (4.8 inches)80%very high
June Weather21°C (70°F)117 mm (4.6 inches)80%very high
July Weather24°C (75°F)68 mm (2.7 inches)80%very high
August Weather22°C (72°F)68 mm (2.7 inches)80%very high
September Weather18°C (65°F)101 mm (4.0 inches)80%high
October Weather12°C (53°F)116 mm (4.6 inches)84%moderate
November Weather3°C (38°F)63 mm (2.5 inches)89%moderate
December Weather0°C (32°F)60 mm (2.4 inches)86%low

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